Experimental Investigation of Electrospraying Properties Based on Ring Electrode Modification

Area of Science:

• Fluid dynamics
• Electrohydrodynamics
• Materials science

Background:

• Electrospraying is a technique for generating fine droplets using high voltage.
• Controlling droplet size and spray pattern is crucial for various applications.

Purpose of the Study:

• To comparatively analyze electrospraying spray patterns and droplet properties.
• To investigate the influence of ring electrode parameters on droplet formation.

Main Methods:

• Experimental analysis of spray patterns and droplet characteristics.
• Systematic variation of ring electrode parameters (diameter, voltage, nozzle-to-ring distance).

Main Results:

• The ring electrode facilitates rapid formation of the cone-jet mode.
• Decreasing ring diameter and increasing ring voltage influenced droplet properties.
• Increased nozzle-to-ring distance reduced Sauter mean diameter and its standard deviation.

Conclusions:

• Optimal electrospraying for fine, uniform droplets achieved with a 15 mm ring diameter, 7 kV ring voltage, and +20 mm nozzle-to-ring distance.
• Ring electrode parameters significantly impact droplet size and uniformity.